include/wx/dcgraph.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/graphdc.h
   3 // Purpose:     graphics context device bridge header
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:
   7 // Copyright:   (c) Stefan Csomor
   8 // RCS-ID:      $Id$
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_GRAPHICS_DC_H_
  13 #define _WX_GRAPHICS_DC_H_
  14
  15 #if wxUSE_GRAPHICS_CONTEXT
  16
  17 #include "wx/geometry.h"
  18 #include "wx/dynarray.h"
  19 #include "wx/graphics.h"
  20
  21 class WXDLLIMPEXP_FWD_CORE wxWindowDC;
  22
  23
  24 class WXDLLEXPORT wxGCDC: public wxDC
  25 {
  26 public:
  27     wxGCDC( const wxWindowDC& dc );
  28     wxGCDC( const wxMemoryDC& dc );
  29     wxGCDC();
  30
  31     wxGraphicsContext* GetGraphicsContext();
  32     void SetGraphicsContext( wxGraphicsContext* ctx );
  33
  34 private:
  35     DECLARE_DYNAMIC_CLASS(wxGCDC)
  36     DECLARE_NO_COPY_CLASS(wxGCDC)
  37 };
  38
  39
  40
  41 class WXDLLEXPORT wxGCDCImpl: public wxDCImpl
  42 {
  43 public:
  44     wxGCDCImpl( wxDC *owner, const wxWindowDC& dc );
  45     wxGCDCImpl( wxDC *owner, const wxMemoryDC& dc );
  46     wxGCDCImpl( wxDC *owner );
  47
  48     virtual ~wxGCDCImpl();
  49
  50     void Init();
  51
  52
  53     // implement base class pure virtuals
  54     // ----------------------------------
  55
  56     virtual void Clear();
  57
  58     virtual bool StartDoc( const wxString& message );
  59     virtual void EndDoc();
  60
  61     virtual void StartPage();
  62     virtual void EndPage();
  63
  64     // flushing the content of this dc immediately onto screen
  65     virtual void Flush();
  66
  67     virtual void SetFont(const wxFont& font);
  68     virtual void SetPen(const wxPen& pen);
  69     virtual void SetBrush(const wxBrush& brush);
  70     virtual void SetBackground(const wxBrush& brush);
  71     virtual void SetBackgroundMode(int mode);
  72     virtual void SetPalette(const wxPalette& palette);
  73
  74     virtual void DestroyClippingRegion();
  75
  76     virtual wxCoord GetCharHeight() const;
  77     virtual wxCoord GetCharWidth() const;
  78
  79     virtual bool CanDrawBitmap() const;
  80     virtual bool CanGetTextExtent() const;
  81     virtual int GetDepth() const;
  82     virtual wxSize GetPPI() const;
  83
  84     virtual void SetMapMode(int mode);
  85     virtual void SetUserScale(double x, double y);
  86
  87     virtual void SetLogicalScale(double x, double y);
  88     virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
  89     virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
  90     virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
  91     virtual void SetLogicalFunction(int function);
  92
  93     virtual void SetTextForeground(const wxColour& colour);
  94     virtual void SetTextBackground(const wxColour& colour);
  95
  96     virtual void ComputeScaleAndOrigin();
  97
  98     wxGraphicsContext* GetGraphicsContext() { return m_graphicContext; }
  99     virtual void SetGraphicsContext( wxGraphicsContext* ctx );
 100
 101 protected:
 102     // the true implementations
 103     virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
 104         int style = wxFLOOD_SURFACE);
 105
 106     virtual void DoGradientFillLinear(const wxRect& rect,
 107         const wxColour& initialColour,
 108         const wxColour& destColour,
 109         wxDirection nDirection = wxEAST);
 110
 111     virtual void DoGradientFillConcentric(const wxRect& rect,
 112         const wxColour& initialColour,
 113         const wxColour& destColour,
 114         const wxPoint& circleCenter);
 115
 116     virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
 117
 118     virtual void DoDrawPoint(wxCoord x, wxCoord y);
 119
 120 #if wxUSE_SPLINES
 121     virtual void DoDrawSpline(const wxPointList *points);
 122 #endif
 123
 124     virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
 125
 126     virtual void DoDrawArc(wxCoord x1, wxCoord y1,
 127         wxCoord x2, wxCoord y2,
 128         wxCoord xc, wxCoord yc);
 129
 130     virtual void DoDrawCheckMark(wxCoord x, wxCoord y,
 131         wxCoord width, wxCoord height);
 132
 133     virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 134         double sa, double ea);
 135
 136     virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 137     virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
 138         wxCoord width, wxCoord height,
 139         double radius);
 140     virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
 141
 142     virtual void DoCrossHair(wxCoord x, wxCoord y);
 143
 144     virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
 145     virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
 146         bool useMask = false);
 147
 148     virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
 149     virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
 150         double angle);
 151
 152     virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
 153         wxDC *source, wxCoord xsrc, wxCoord ysrc,
 154         int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
 155
 156     virtual bool DoStretchBlit(wxCoord xdest, wxCoord ydest,
 157                                wxCoord dstWidth, wxCoord dstHeight,
 158                                wxDC *source,
 159                                wxCoord xsrc, wxCoord ysrc,
 160                                wxCoord srcWidth, wxCoord srcHeight,
 161                                int rop = wxCOPY, bool useMask = false,
 162                                wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord);
 163
 164     virtual void DoGetSize(int *,int *) const;
 165     virtual void DoGetSizeMM(int* width, int* height) const;
 166
 167     virtual void DoDrawLines(int n, wxPoint points[],
 168         wxCoord xoffset, wxCoord yoffset);
 169     virtual void DoDrawPolygon(int n, wxPoint points[],
 170         wxCoord xoffset, wxCoord yoffset,
 171         int fillStyle = wxODDEVEN_RULE);
 172     virtual void DoDrawPolyPolygon(int n, int count[], wxPoint points[],
 173         wxCoord xoffset, wxCoord yoffset,
 174         int fillStyle);
 175
 176     virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
 177     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
 178         wxCoord width, wxCoord height);
 179
 180     virtual void DoGetTextExtent(const wxString& string,
 181         wxCoord *x, wxCoord *y,
 182         wxCoord *descent = NULL,
 183         wxCoord *externalLeading = NULL,
 184         const wxFont *theFont = NULL) const;
 185
 186     virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const;
 187
 188 protected:
 189     // scaling variables
 190     bool m_logicalFunctionSupported;
 191     double       m_mm_to_pix_x, m_mm_to_pix_y;
 192     wxGraphicsMatrix m_matrixOriginal;
 193     wxGraphicsMatrix m_matrixCurrent;
 194
 195     double m_formerScaleX, m_formerScaleY;
 196
 197     wxGraphicsContext* m_graphicContext;
 198
 199 private:
 200     DECLARE_CLASS(wxGCDCImpl)
 201     DECLARE_NO_COPY_CLASS(wxGCDCImpl)
 202 };
 203
 204 #endif
 205
 206 #endif // _WX_GRAPHICS_DC_H_